distro/redhat: Update to F24 and fix few issues, add nhrpd.service

* redhat/quagga.spec.in: Review Fedora spec file and sync up with any
  useful differences, inc:
 - Add tmpfiles.d/quagga.conf config for Quagga from Fedora
 - Add quagga-filter-perl-requires.sh from Fedora.
 - Move libs to %{_libdir}/quagga as per Fedora
 - use systemd_postun_with_restart for postun
 Add nhrpd.service systemd file.  Simplify/chop down the RPM description.
* Makefile.am: Update to match
diff --git a/redhat/Makefile.am b/redhat/Makefile.am
index fadfe64..b1d49ac 100644
--- a/redhat/Makefile.am
+++ b/redhat/Makefile.am
@@ -4,5 +4,6 @@
 	quagga.logrotate quagga.pam quagga.spec \
 	quagga.sysconfig ripd.init ripd.service ripngd.init ripngd.service \
 	watchquagga.init pimd.init pimd.service zebra.init zebra.service \
+	nhrpd.service \
+	quagga-filter-perl-requires.sh quagga-tmpfs.conf \
 	README.rpm_build.md
-